- _MappingBase.dim -> _MappingBase.dims
- rework IntensityMap and gradient removal, the value of the delta has still to be given mannually (but should come from the range of the unique values)
- add testFullSteam to check the full treatment without GUI
- rework DimensionGUI to display if asked the unique values for each dimensions once fit has been done

- adapt shift (wok with data_flatten but should probably be extended latter)
- adapt noise reduction (work with data_flatten)
- remove the data reduction widget because should be highly modify since the numpy.ndarra.view in the experiement.data appear. Should be re-done